Which of the following is NOT considered a characteristic of waste military munitions?

Unused spare parts are not considered a characteristic of waste military munitions. Waste military munitions generally refer to items that can no longer serve their intended purpose or pose safety or environmental hazards. This typically includes used explosives that have gone off or been rendered useless, decommissioned chemical agents that have been officially retired and need safe disposal, and improperly stored munitions that could potentially be unstable or dangerous if not managed correctly. Unused spare parts, however, can still be functional and useful for maintenance or repairs, thus not falling into the category of waste. Therefore, they do not carry the same implications for safety or environmental management as the other options do.